Optimisation

CREATE OR REPLACE FORCE VIEW V_VOLUME_HORAIRE_REF_ETAT AS

SELECT

SELECT DISTINCT

  vhr.id volume_horaire_ref_id,

  evh.id etat_volume_horaire_id

FROM

  volume_horaire_ref vhr

  JOIN etat_volume_horaire evh ON evh.code = CASE

    WHEN vhr.auto_validation = 1 OR EXISTS(

      SELECT * FROM validation v JOIN validation_vol_horaire_ref vvhr ON vvhr.validation_id = v.id

      WHERE vvhr.volume_horaire_ref_id = vhr.id AND v.histo_destruction IS NULL

    ) THEN 'valide'

    ELSE 'saisi'

  END

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  LEFT JOIN validation_vol_horaire_ref vvhr ON vvhr.volume_horaire_ref_id = vhr.id

  LEFT JOIN validation v ON v.id = vvhr.validation_id AND v.histo_destruction IS NULL

  JOIN etat_volume_horaire evh ON evh.code = CASE WHEN vhr.auto_validation = 1 OR v.id IS NOT NULL THEN 'valide' ELSE 'saisi' END

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